Method for temporarily plugging fracture and crack flow-guiding device

The invention provides a method for temporarily plugging a fracture and a crack flow-guiding device. The method for temporarily plugging the fracture includes the steps that according to a crack parameter and a target pressure value of a rock mass crack in a rock mass to be fractured, a target temporary plugging agent is determined; the crack parameter of the rock mass crack is rock mass distanceof a preset region in the rock mass crack; the target temporary plugging agent and fracturing fluid are injected into the rock mass crack in sequence; the target temporary plugging agent is used for achieving the effect that pressure of the fracturing fluid injected into the rock mass crack can reach the target pressure value, and the problem that in the prior art, it needs to prepare temporary plugging agents several times to temporarily plug the fracture is solved.